Texas Instruments MSP430x1xx User Manual
Page 49
Operating Modes
3-19
System Resets, Interrupts, and Operating Modes
Table 3–6. Low Power Mode Logic Chart for Basic Clock System
SCG1
SCG0
OscOff
CPUOff
LPM0
0
0
0
1
LPM1
0
1
0
1
LPM2
1
0
0
1
LPM3
1
1
0
1
LPM4
1
1
1
1
These modes are illustrated in Figure 3–11.
Figure 3–10. MSP430x1xx Operating Modes For Basic Clock System
Active Mode
CPU Is Active
Various Modules Are Active
LP Mode LPM0
CPU Off, MCLK Off,
SMCLK, ACLK On
CPUOff = 1
SCG0,1 = 0
CPUOff = 1
SCG0 = 1
SCG1 = 0
LP Mode LPM2
CPU Off, MCLK Off,
SMCLK Off, DCO Off,
ACLK On
CPUOff = 1
SCG0 = 0
SCG1 = 1
LP Mode LPM3
CPU Off, MCLK Off,
SMCLK Off, DCO Off
ACLK On
CPUOff = 1
SCG0,1 = 1
DC Generator Off
LP-Mode LPM4
CPU Off, MCLK Off,
DCO Off, ACLK Off
DC Generator Off
CPUOff = 1
OscOff = 1
SG0,1 = 1
RST/NMI
NMI Active
PUC
RST/NMI is Reset Pin
WDT is Active
POR
WDT Active,
Security Key Violation
WDT Active,
Time Expired, Overflow
WDTIFG = 1
WDTIFG = 1
RST/NMI
Reset Active
V
CC
On
WDTIFG = 0
LP Mode LPM1
CPU Off, MCLK Off,
SMCLK, ACLK On
DC Generator Off if DCO
not used in active mode